Electric cloth-cutting machine.



N. KOMOW.- ELECTRIC CLOTH CUTTING MACHINE. v APPLICATION FILED JULY 24, I9I2- RENEWED MN. 23, I9I5.

Patented May 25, 1915.

a J ll IIIII NICOLAS KOMOW, or Nnw Yo-nx, n. Y., assioaaon no run when snares eaorn comma MACHINE 00. me, or new roan, n. r,

ELEGTNG CIDOTHCUTTIN@ MAGHINW.

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Patented May 25, 1915.

Application filed aui aa, 1e12, Serial no. 711,321. nenewea January as, 1915. Serial 110.4,077.

7 .by means of a set of gears, and the objects of my improvements are, first: to provide a machine with a compact motor, which does not obstruct the view of the-knifet second to afford facilities for the grinding of the circular knife; third: to'have. an efi'ective guard which will protect the operator from injury by the knife; fourth: novel means of raising the cloth so as to bring the bottom layers up against the edge of the knife, so that the bottom layer may be cut as deep as the top, while cuttingaround corners. I attain these objects by mechanism illustrated in the accompanying drawing, in

which-- Figure 1, is a front view of the entiremas chine. Fig. 2, is a side view of'the entire machine; Fig. 3, is a top view of the part of the base 1, auxiliary cloth-raiser 3 and movable cloth-raiser 4, and recess 5. Fig. 4,

is top view of the motor part showing the field-magnets, field-coil, armature and shaft.

Fig. 5, is a top view of a field lamination.

Fig. 6, is a front view of. the gear-guard 22,

spring 23, showing means of attaching the same'to standard 2, and bottom cup 25. Fig.

7 is a side view of knife-guard 17, set screw 18, and rod 11 on which it is adjusted.

Similar numbers refer to similar parts 40 throughout the several views.

- To the base plate 1 is fastened the standard 2- to which is movably fastened a circular knife 19 by means of the screws 10 and 11.

The bevel gear 20 and the flange 8' are fixed to the'circular knife 19. The gear 21, which is fixed to the armature shaft. 30, en gages the gear 20 and revolves the knife by .the rotation of the armature 29.

In the base plate 1 I make a recess 5 in which ismovably set the cloth raiser 4, be hind the stationary cloth raiser 3. The movable cloth raiser 4 is fulcrumed at 1'. At the rear of the cloth 'raiser 4i, rests the pressing rod 80 which bears in the lugs 6 and 7 of the standard 2. The lower end of the coil spring 9 rests on the lug 6 and the upperextremity presses against the knob 100, which is at the upper extremity of the- I pressing rod 80. The pressure of the spring 9 normally tends to keep the rod 80 in its raised position;

It has been found to be impossible to make I vertical cuts in layers of clothwhile going around curves or into corners with a circular knife and in order to make vertical cuts in layers of-cloth while going around curves or into corners, I press the knob 100 at the upper extremityof the rod '80, thusovercoming the upper pressure of the spring 9, and forcing the shorter end .of themovable raiser 4: downward, raising the forward plow-shaped end upward, thus raising the cloth and bringing it nearer to the center of the knife. On straight cuts, the stationary cloth raiser which is fixed to the base in front of the knife, raises the cloth sufficiently high to prevent the knife from drawing the cloth in too quickly. When the movable cloth raiser is in its raised position, the stationary cloth raiser 3 prevents the for ward point of the movable cloth raiser 4;

from digging into the cloth. 7

The knife guard 17 is movably mounted on the rack rod 110 and is adjusted by a set screw 18 so as to expose more or less of the edge of the knife, according to the thickness of'the cloth to be out. Y

The back rod 110 bears in the lugs 13 and '14 of the standard 2. At the forward end of said rod 110 is the rack 12 which engages the pinion 15. Said pinion 15 is mounted on the grinder 16 and swivels on the pin 15.

One end of the spring 16 is fastened to the bottom cup 25, and the other end is fastened to the grinder 16 so as to keep the grinderin the upward position, away from the knife when not in operation. To sharpen the knife 19, I pull the hook 110 of the rod 110, which brings the guard 17 backward and exposes the edge of the knife, and siinultaneously the rack 12 engages the gear 15 and turns it so as to bring the grinder down against the knife, overcoming the tension of the spring 16. The removablegear guard 22 is held in place by the spring 23 and the lug 2 of the standard 2. p

The spring 23 is fastened to the bottom cup 25, at 24. The method of fastening makes the gear guard 22 easily removable for the purpose of cleaning and Toiling th gear ,21.

Having thus described my invention, which I claim as new, and desire to secure by Letters Patent is:

' 1. In an electric cloth cutting machine the combination with the base plate standard,

circular knife and means of operating same of a movable cloth-raiser fulcrumed and raised by means of a pressing rod and released by a spring and a stationary clothraiser set in front of movable cloth-raiser substantially as set forth.

2. In an electric cloth cutting machine,

I the combination with a base-plate, standard,

SIMON RAsoH, ADoLrH STERN.

of operating. the 25 v 

